Add a custom text field to product checkout?

For one product, the customer needs to also collect a license number. It has to be a text field. Is this possible? I'd rather not use the "entry"/register form because it's cumbersome. And there cannot be multiple unique instances.
Thanks,
-JG

hi,

I think that you'll probably find your answer there :

You have two possibilities:
1. You can create a custom field of the table "order" via the menu Display->Custom fields. The field will appear during the checkout and attached to the order.
2. You can create a custom field of the table "item" via the menu Display->Custom fields. The field will appear on the product page and attached to the product in the cart (and later on to the product in the order).
In both cases, that is only possible with the Business edition. Also, in both cases, the information will be available in the emails and in the order details on the back end.

Hi,

In regards to the custom fields in the email messages; where do I change the code a bit to have the custom fields more compresesd as well as has the product name only bolded so it is distinct when more than one item is purchased. See attached screenshot where I boxed the item that I would like bolded but not the custom fields underneath.

Thanks

My inquiry resolved.
Found the code to edit in the order creation email notice to customer:

echo '<p style="margin:0;">'.$fieldsClass->getFieldName($field).': '.$fieldsClass->show($field,$item->$namekey).'</p>';